Glass manufacturing – Processes – Utilizing parting or lubricating layer
Patent
1975-07-02
1976-06-08
Kellogg, Arthur D.
Glass manufacturing
Processes
Utilizing parting or lubricating layer
65 76, 65 84, 65182A, C03B 1100
Patent
active
039619273
ABSTRACT:
A method of shaping glass to a desired form comprises delivering molten glass on to a porous support member while feeding a gas under pressure through the porous support member from the reverse side thereof, so as to support the molten glass out of contact with the support member on a cushion of gas, allowing the glass to assume a shape approximating to that of the support member under the forces of surface tension, gravity and gas cushion pressure, cooling the glass while thus supported on the gas cushion to a temperature at which it is so conditioned that it can be shaped by contact with a solid surface without any substantial surface damage, and shaping the conditioned glass by a shaping process which involves contact with a solid surface.
The shaping process may be a moulding process, which can be carried out either in the porous support member or in a separate mould to which the glass is transferred. The gas, e.g. nitrogen or nitrogen + 5% hydrogen, may be fed to the porous support member at ambient temperature. Alternatively, for controlling the rate of heat transfer from the supported glass, the temperature and/or flow rate of the gas may be controlled, or the temperature of the environment of the porous support member may be controlled, e.g. using a muffle. The shaping process may alternatively be a rolling process, the glass flowing from a channel-shaped porous support member to a pair of rollers.
REFERENCES:
patent: 679705 (1901-07-01), Sievert et al.
patent: 1739519 (1929-12-01), Peiler
patent: 2395727 (1946-02-01), Devol
patent: 2478090 (1949-08-01), Devol
patent: 3254981 (1966-06-01), Havens
Alderson John Victor
Rudd John Duncan
Stanley Donald Frederick
Kellogg Arthur D.
Pilkington Brothers Limited
LandOfFree
Apparatus and method for moulding glass objects does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for moulding glass objects, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for moulding glass objects will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1095434